Island



. the frame-bars, as seen in Fig. 1.

U TED STATES PATENT OFFICE.

WILLIAM H. POND AND WILLIAM N. TAIPE, OF PROVIDENCE, RHODE ISLAND.

LOCK FOR SPEGIFIGATION forming art of Letters Patent No. 593,755, dated November 16, 1897.

Application filed August 26, 1897.

To all whom it mag concern.-

Be it known that we, WILLIAM H. POND and WILLIAM N. TAIPE, of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Looks for Bicycles, &c. and we'do hereby declare that the following is a full, clear, and exact description thereof, reference being had to theaccompanying drawings, and to the letters of reference marked thereon, which. form a part of this specification.

This invention relates to the locks intended to be used on bicycles and other vehicles of that class. It is fully explained and illustrated in this specification and the accompanying drawings. 1

Figure 1 shows the guiding-stem and a portion of the handle-bars, fork, and front wheel of a bicycle with the lock attached to the guiding-stemtube. Fig. 2shows a part of the guiding-stem and its frame-tube in section and lock with outer plate removed to show the bolt and the parts-that move it. Fig. 3 is the same as Fig. 2, excepting that all the moving parts are shown. Fig. 4 shows the face of the lock with the sliding dust-guard forthe key hole. Fig. 5 represents one of the dogs. Figs. 6 to 9, inclusive, show the pivoted tumblers. Fig. 10 is a representation of the key. Fig. 11 shows an enlarged view of the inside of the lock with the key in it and the bolt drawn back. Fig. 12 is a top view of the bolt. Fig. 13 is a perspective view of the plate that moves the bolt, with its latch.

The object of the invention is to make a lock to attach permanently to a Vehicle that shall leave the front wheel in such a position when locked as to entirely prevent the use of the vehicle and leave but little inducement to any one to steal or to borrow it without leave. I

The construction of the lock and its operation is this: A flat case A, that holds the working parts of the lock, consists of a back plate and three raised sides and aface-plate, which is removed in Figs. 2, 3, and 11. This case A is permanently attached to the frametube 0 by its open side and is preferably located on the inner side of the tube between The work- Serial No. 649,573. (No model.)

ing parts consist of a bolt a,;(see Fig. 2,) its inner end sliding in a hole in the tube 0, and the outer parts of it made forked to slide on a stationary stud 6, fast in the back plate of the lock. This forked part of the boltaalso contains an open spiral spring I), that pushes the bolt into the tube 0. A vertical lever d is hung on a pin 0, fast in the back plate, and the upper end of the lever lies in a notch in the back of the bolt. (See Fig. 12.) The lower end of the lever extends down back of the inner end of a sliding plate g, that pushes the bolt back by means of the lever when the lock is unlocked. This plate 9 has a slot 71 in its upper part, by which it slides on a pin h, fast in the back plate of the lock.

The sliding plate 9 has a notched latch n pivoted to it that projects through an opening in the face of the lock, and when the plate is pushed in it falls down and catches on the front, as in Fig. 11. At the lower edge of the plate 9 a fiat bar 4" projects at right angles to the plate, (see Fig. 13,) and by means of this bar the pi voted tumblers s 3 control the movement of the plate g. These pivoted tumblers are in pairs, Figs. 6 and 7 forming one pair, as seen in Fig. 11, and Figs. 8 and 9 making another pair. The lock may be made with as many pairs of the plates as may be desired.

To each pair of plates 8 3' one dog 6 is put on the pin 0 and arranged so that the point of the dog will bear on top of a plate 8 at 0, Fig. 6, and a pin 1) in the dog enters a slot 0 in the other plate 3 of the pair, Fig. 7. A spring 10 is held by a pin win the lower back corner of the lock, and its upper end is curved over to bear on the tops of the plates 8' and press them down, and pins 0 in dog entering the slots 0 will cause the dogs to hold down the plates 3. Supposing the lock to be locked as in Fig. 3, the bar '1" of the plate g, catching against the projections y on the plates 8 s, will prevent the plate 9 from sliding and pushing out the bolt,by the lever d.

The front projections f on the plates 9 are of different widths. They will therefore require a key with different length of projections on its end j to correspond with the widths of the projections f, so that when it is inserted in the look (see Fig. 11) it will push all the plates 3 s to the proper distance to allow the bar 7- of the plate 9 to move with the plate and cause the bolt to move back and unlock the stem J, into which the bolt projects when locked. The hole in the stem J, made to receive the bolt, is located so as to come opposite to the hole in the tube when the wheel is turned, say, nearly to a right angle to the frame, so that it could not be used while locked. (See Fig. 1.)

To prevent the dust from entering the keyhole, a sliding plate 0 is held over it by two rivets t" i, that slide in a slot cut in the plate vertically across the keyhole, and a spring N is held by the pin 11*, the free end of the spring being arranged to press upon one of the rivets and hold the plate (2 up over the keyhole when the key is not in the lock.

Having thus described our improvement, we claim as our invention and desire to secure by Letters Patent 1. In a lock of the character described the combination of a bolt forked to admit a stationarystud to guide it, an open spiral spring held in said fork to press the bolt in to accomplish the looking, a lever pivoted at its center and having one end held in a notch in said bolt and its other end extending down by a sliding plate, a sliding plat-e arranged to push said lever and accomplish the unlockin g, a latch pivoted to said plate and arranged to catch on the case and hold the bolt unlocked, a series of pivoted tumblers to hold said sliding plate from pushing said lever,

substantially as described.

2. In a lock of the character described, the combination of a bolt, a lever to operate said bolt, a sliding plate to push the lever, one or more pairs of pivoted tumblers to control said sliding plate, a dog held on a pin to connect the two plates of a pair, a spring arranged to press on one plate of a pair, substantially as described.

3. In a lock of the character described the combination of a bolt, a lever to operate said bolt, a sliding plate to push the lever, one or more pairs of pivoted tumblers to control said sliding plate, a dog held on a pin to connect the two plates of a pair, a spring arranged to press on one plate of a pair, a sliding plate to close the keyhole, a spring arranged to press said plate up over the keyhole when not in use, substantially as described.

4:. In a lock of the character described the combination of a belt, a lever to operate said bolt, a sliding plate to push the lever, one or more pairs of pivoted tumblers to control said sliding plate, a dog held on a pin to connect the two plates of a pair, a spring arranged to press on one plate of a pair, a front tube of a bicycle-frame to hold the lock having a hole in it to receive the end of the belt, a bicycle-guiding stem having a hole in it corresponding to the hole in said tube when the wheel is at an angle to the bicycle-frame, substantially as specified.

In testimony whereof we have hereunto set our hands this 24th dayof August, A. D. 1897.

\VILLIAM II. POND. \VILLIAM N. TAIPE.

In presence of BENJ. ARNOLD, E. II. BovnnN. 

